3 years ago

Factor the expression:

Mathematics

1 answer:

Dovator [93]3 years ago

6 0

Answer:

B) (4x-5i)(4x+5i)

Step-by-step explanation:

The expression can be treated as the difference of squares, and factored accordingly. That factoring is ...

a² -b² = (a -b)(a +b)

Here, we have ...

a² -b² = 16x² -(-25)

a² = 16x² ⇒ a = 4x

b² = -25 ⇒ b = √-25 = 5i

Then the factoring is ...

(a -b)(a +b) = (4x -5i)(4x +5i)

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